Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
?
Solved

How can I check the result of mysql query in python?

Posted on 2016-09-20
8
Medium Priority
?
45 Views
Last Modified: 2016-09-25
I've seen lines like op.execute("CREATE LANGUAGE plpgsql") in other scripts in my system so thought I could do similar with the following.

op.execute("SHOW TABLES LIKE 'table_name'")

How can I check the result from this and then do stuff based on existence or not?

I tried result = op.fetchone() but this is incorrect.
  AttributeError: 'module' object has no attribute 'fetchone'

and
  if not op.execute("SHOW TABLES LIKE 'agents'"):
0
Comment
Question by:mickt
  • 5
  • 3
8 Comments
 
LVL 84

Assisted Solution

by:Dave Baldwin
Dave Baldwin earned 1500 total points
ID: 41806357
Do you have anything working?  Which MySQL driver are you using?

http://dev.mysql.com/downloads/connector/python/
0
 

Author Comment

by:mickt
ID: 41806368
Server version: 5.6.31-ndb-7.4.12-cluster-gpl

Multiple DB and all working.

Trying to do/not do something based on the existence of a table.
0
 
LVL 84

Expert Comment

by:Dave Baldwin
ID: 41806382
I believe you have to process 'SHOW TABLES' and similar queries just like a SELECT query because that is what they are.
0
Get expert help—faster!

Need expert help—fast? Use the Help Bell for personalized assistance getting answers to your important questions.

 

Author Comment

by:mickt
ID: 41806409
Sorry, I'm not following, can you please clarify for me?
0
 

Author Comment

by:mickt
ID: 41806609
I cam across this too.

    cursor.execute("SHOW TABLES LIKE 'table_name'")
    result = cursor.fetchone()
    if result:
        "There is a table named table_name."
    else:
        do stuff

but it complains about cursor
0
 

Accepted Solution

by:
mickt earned 0 total points
ID: 41806954
II resolved as follows:

    tbl = op.execute("SHOW TABLES LIKE 'table_name'")
    if not tbl:
        return
0
 
LVL 84

Expert Comment

by:Dave Baldwin
ID: 41807226
Glad you got it figured out.  I had to get some sleep.
0
 

Author Closing Comment

by:mickt
ID: 41814583
Answers question.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Here I am using Python IDLE(GUI) to write a simple program and save it, so that we can just execute it in future. Because when we write any program and exit from Python then program that we have written will be lost. So for not losing our program we…
Flask is a microframework for Python based on Werkzeug and Jinja 2. This requires you to have a good understanding of Python 2.7. Lets install Flask! To install Flask you can use a python repository for libraries tool called pip. Download this f…
Learn the basics of strings in Python: declaration, operations, indices, and slicing. Strings are declared with quotations; for example: s = "string": Strings are immutable.: Strings may be concatenated or multiplied using the addition and multiplic…
Learn the basics of while and for loops in Python.  while loops are used for testing while, or until, a condition is met: The structure of a while loop is as follows:     while <condition>:         do something         repeate: The break statement m…
Suggested Courses
Course of the Month14 days, 6 hours left to enroll

580 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question